Mechanism for central draft lamps



(No Model.) A 3 Sheets-Sheet 1;

H. C. WEBB. EXTINGUISHING MECHANISM FOR CENTRAL DRAFT LAMPS. No. 466,545-PatentedJam. 5, 1892.

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3 Sheets-Sheet 2.

(No Mddel.) H. C. WEBB.

EXTINGUISHING MECHANISM FOR, CENTRAL DRAFT. LAMPS. No. 466,545. PatentedJan. 5, 1892.

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(No Model.) 3 SheetsSheet 3. H. G. WEBB. EXTINGUISHING MECHANISM. FORCENTRAL DRAFT LAMPS. No. 466,545. Patented Jan. 5,1892.

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UNITED STATES P TENT FFIGE.

HENRY CLAY NVEBB, OF OROYDON, ASSIGNOR TO SALOMON FALK, OF LONDON,

ENGLAND.

EXTINGUISHING MECHANISM FOR CENTRAL-DRAFT LAMPS.

SPECIFICATION forming part of Letters Patent No. 466,545, dated January5, 1892.

' Application filed June '7, 1890. Renewed June 23, 1891- Serial No.397,198. (No model.)

To all whom it may concern:

Be it known that I, HENRY CLAY WEBB, a

. citizen of the United States of America, re-

siding in Oroydon, in the county of Surrey, England, have invented newand useful Improvements in Extinguishing Mechanisms for Central-DraftLamps, of which the following is a specification.

My invention relates to improved mechanism for extinguishingoil-lampshaving round wicks; and it consists, essentially, in the employment of anumber of thin metal plates in the form of segments of a disk or-ofother suitable shape, which plates are hinged or jointed to a tubesliding upon the wick-tube of a lamp in such a manner that when thesliding tube is raised the required distance the said plates will closeinward over the wick and so extinguish the flame.

To enable my invention to be fully understood,Iwill describe the samewith reference to the accompanying drawings, in which- Figure 1 is asectional elevation of a lampburner provided with extinguishingmechanism constructed according tomy invention, the extinguisher beingrepresented in its 3 0E position-that is to say, in the position whichit occupies while the lamp is alight. Fig. 2 is a plan of the same, thedome of the .burner being removed. Figs. 3 and 4 are views similar toFigs. 1 and 2, respectively,

but showing the extinguisher in its on position-that is to say, in theposition which it occupies to extinguish the flame. Fig. 5 is asectional elevation of a wick-tube and extinguisher, showing thearrangement of springs for insuring the inward turning of the segmentalplates when the sliding tube is raised. Fig. 6 is a view similar to'Fig.5, illusthe wick tube, and e e are the plates pivoted to the same at ffand adapted to close inward over the wick. As represented in Figs. 1 to4, these plates are of a substantially oblong form, except that the sideof each plate which is pivoted to the tube d is curved to correspondwith the contour of thewick-tube and the said plates are arranged insuch a manner that each one overlaps one of .the adjacent plates at oneend, as will be clearly seen by reference to Fig. 4, the object of thisarrangement being to insure that all the plates shall close over thewick, no one of them being capable of turning down without turning allthe others down with it. The said plates are advantageously slightlycurved, as shown most clearly in Figs. 2 and 3, to cause them to lie asclosely as possible against the wick-tube and thus occupy acomparatively small space.

g is a lever, which is pivoted in the lower part of the gallery I) andprovided at one end with a fork h, engaging with pins on the slidingtube (Z in such a manner that when the said lever is depressed from theposition shown'in Fig. 1 to that shown in Fig. 4 the said tube d will beelevated to extinguish the flame. the plates e is on the inner side ofthe pivots so that when the tube is raised the weight of the said platesthemselves will cause them to fall inward over the wick, as shown inFig. 3.

In some cases it may be advisable to provide means for positively movingthe plates when the tube at is raised, and for this purpose Iadvantageously employ one springs i, as shown in Fig. 5, which aresecured to' the sliding tube (1 and adapted to bear upon a projection jor projections jj, formed integral with the plates e.

In cases where the use of springs is considered objectionable Iadvantageously employ the arrangement shown in Figs. 6 and 7, in which70 Z0 indicate bars sliding vertically upon guides Z Z on the tube d,which bars at their lower ends have connected to them the arms of thefork h of the extinguisher-1e ver g and at their upper ends bear againstthe under'sides of the projections j j on the plates e e. With thisarrangement when the It will be noticed that the weight of I 01' morelever g is depressed the bars 76 (by pressing against the projections j)will raise the tube d without moving relatively to the said tube untilthe said plates have moved sufficiently far above the top of the wicktube when the said bars 70 7a, owing to their being able to move for ashort distance independently, will turn the said plates over the flame.If the segments are constructed and intended to lie side by side in thesame plane,it will be found that they cannot be made to work withsufficient accuracy to insure a proper extinguishing of the lamp.Segments made in this way would be continually striking against eachother along their edges and hinder the operation of the device. Bymaking the segments so that each overlaps its adjacent segment on oneside and is overlapped by its adjacent segment on the other side thesegments, when operated to extinguish the lamp, will fall in upon oneanother Without hitching or interfering. By making the segments tooverlap the perfect and accurate operation of the extinguisher issecured.

Having now particularly described my invention, what I claim is- 1. Thecombination, with the wick-tube, of the sleeve or collar adapted toslide longitudinally thereon, a series of extinguisher-plates pivotallymounted on said collar and provided with projecting portions, a seriesof plates movably secured to said sleeve or collar and engaging saidprojections, and means for moving said sleeve or collar and said slidingplates together and also moving said sliding plates in relation to saidsleeve or collar to operate said extinguisher-plates, substantially asdescribed.

2. The combination, with the wick-tube, of a sleeve or collar adapted toslide longitudinally thereon, a series of extinguisher-plates pivoted tosaid sleeve and held in vertical position by the wick-tube, said platesbeing provided with projecting portions, a series of sliding platessecured to the sleeve or collar and engaging the said projections, and alever connected to said sliding plates, whereby said sleeve or collarand said plates will be raised simultaneously until the wick-tube isdisengaged by the extinguisher-plates, when said sliding plates willmove relatively to said sleeve or collar to depress theextinguisherplates over said wick-tube, substantially as described.

3. The combination, with the wick-tube, of the sliding extinguisher-tubehaving a series of segments pivotally connected thereto and adapted tooverlap each other when closed over the wick-tube, substantially asdescribed.

4. The combination, with the wick-tube, of the sliding extinguisher-tubeprovided with a series of pivoted segments engaging the side of thewick-tube, each of said segments overlapping its adjacent segment on oneside and being overlapped by its adjacent segment on the other side, andmeans for raising said extinguisher-tube so as to move the segments outof engagement with the side of the wicktnbe, whereby the segments mayengage the top of the wick-tube and extinguish the lamp, substantiallyas described.

HENRY CLAY \VEHB.

\Vitnesses:

G. J. REDFERN, B. BRADY.

